True, but for many entities the time they were created is basically public information anyway - time of a tweet, date hacker news account was created, time blog

True, but for many entities the time they were created is basically public information anyway - time of a tweet, date hacker news account was created, time blog post was published. It might leak more granular information than would be publicly available otherwise, but for many use cases it's not a security concern as far as I can tell